[U-Boot] [PATCH 1/6] davinci: ea20: reorganisation LCD startup

Stefano Babic
2012-08-15T17:04:47Z

On 10/08/2012 09:26, Bastian Ruppert wrote:
> Signed-off-by: Bastian Ruppert <Bastian.Ruppert@Sewerin.de>
> CC: Tom Rini <trini@ti.com>
> CC: Stefano Babic <sbabic@denx.de>
> ---
> board/davinci/ea20/ea20.c | 23 +++++++++++++++--------
> 1 files changed, 15 insertions(+), 8 deletions(-)
>
> diff --git a/board/davinci/ea20/ea20.c b/board/davinci/ea20/ea20.c
> index 7e00040..69307e4 100644
> --- a/board/davinci/ea20/ea20.c
> +++ b/board/davinci/ea20/ea20.c
> @@ -176,6 +176,9 @@ int board_early_init_f(void)
> if (davinci_configure_pin_mux(gpio_pins, ARRAY_SIZE(gpio_pins)) != 0)
> return 1;
>
> + /* Set DISP_ON high to enable LCD output*/
> + gpio_direction_output(97, 1);
> +
> /* Set the RESETOUTn low */
> gpio_direction_output(111, 0);
>
> @@ -188,9 +191,6 @@ int board_early_init_f(void)
> /* Set LCD_B_PWR low to power down LCD Backlight*/
> gpio_direction_output(102, 0);
>
> - /* Set DISP_ON low to disable LCD output*/
> - gpio_direction_output(97, 0);
> -
> #ifndef CONFIG_USE_IRQ
> irq_init();
> #endif
> @@ -250,11 +250,6 @@ int board_early_init_f(void)
> writel(readl(&davinci_syscfg_regs->mstpri[2]) & 0x0fffffff,
> &davinci_syscfg_regs->mstpri[2]);
>
> - /* Set LCD_B_PWR low to power up LCD Backlight*/
> - gpio_set_value(102, 1);
> -
> - /* Set DISP_ON low to disable LCD output*/
> - gpio_set_value(97, 1);
>
> return 0;
> }
> @@ -276,6 +271,9 @@ int board_init(void)
>
> int board_late_init(void)
> {
> + unsigned char buf[2];
> + int ret;
> +
> /* PinMux for HALTEN */
> if (davinci_configure_pin_mux(halten_pin, ARRAY_SIZE(halten_pin)) != 0)
> return 1;
> @@ -285,6 +283,15 @@ int board_late_init(void)
>
> setenv("stdout", "serial");
>
> + /* Set fixed contrast settings for LCD via I2C potentiometer */
> + buf[0] = 0x00;
> + buf[1] = 0xd7;
> + ret = i2c_write(0x2e, 6, 1, buf, 2);
> + if (ret)
> + puts("\nContrast Settings FAILED\n");
> +
> + /* Set LCD_B_PWR high to power up LCD Backlight*/
> + gpio_set_value(102, 1);
> return 0;
> }
> #endif /* CONFIG_BOARD_LATE_INIT */
>

Acked-by: Stefano Babic <sbabic@denx.de>

Best regards,
Stefano Babic

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